Re: solo trauma
Chenchio,
I used to be the same way back years ago when I was young. There was just this tremendous block to soloing, but I could pick up rhythms no problem. At the time I was playing rhythm to Priest, Maiden, early Metallica... power chord city, much like what you're into as well. My guess is that the rhythm playing doesn't require much theory knowledge to figure out, once you've figured out the whole power chord business, most of the rest falls into place.
At one time when I was young my Mom offered to get me lessons. I took a few and quit, I told my Mom, "he just wants to teach me notes and stuff......" I wanted to be George Lynch, not some school dork.
So, I quit the guitar for awhile (about 12 years), and when I picked it up again I decided that time was too short, I needed to get on the fast track, and took lessons. I took lessons for about 3 years, and played for about an hour every day without fail. My soloing still needs lots of help, but since learning some theory (I'm not talking rocket science, either), I can now sit down to a slow tune and play a solo that fits most of the time. It's coming along, and I'm better every day.
My advice... bite the bullet and learn some theory. Either take lessons or start reading on your own, or start asking dudes on this board for help. It is a very rare person who can solo without knowing some theory... it's like trying to write without knowing the alphabet. I wished I had taken my advice when I was 18, maybe I wouldn't be struggling at 38!
Life's too short to not be happy playing.